Expansion and evolution of thaumatin-like protein (TLP) gene family in six plants
Expansion and evolution of thaumatin-like protein (TLP) gene family in six plants
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六种植物中索马甜蛋白（TLP）基因家族的扩展和进化
DOI：
10.1007/s10725-015-0134-y
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发表时间：
2016-07-01
影响因子：
4.2
通讯作者：
Ding, Lina
中科院分区：
文献类型：
--
作者：
Cao, Jun;Lv, Yueqing;Ding, Lina
Thaumatin-like protein（TLP）是一个与植物病程相关的蛋白家族，在植物防御系统中起着重要作用。而它的起源和扩展在植物中是未知的。在这里，我们调查了这个基因家族的进化进行全基因组鉴定和比较拟南芥，水稻，杨树，玉米，立碗藓和衣原体。我们在进化中发现了这个基因家族的诞生过程。串联重复和片段重复在其扩展中起主导作用。此外，TLPs处于纯化选择阶段，大多数成员对生物或非生物胁迫有响应。功能网络分析表明，一些抗性基因与TLPs共同发挥作用。我们的研究结果揭示了该家族基因在植物中的进化规律，为进一步研究该家族基因的功能奠定了基础。
Thaumatin-like protein (TLP) is one of pathogenesis-related protein family, which plays an important role in plant defense system. While its origin and expansion is unknown in plants. Here, we investigated the evolution of this gene family by performing a genome-wide identification and comparison in Arabidopsis, Oryza, Populus, Zea, Physcomitrella and Chlamydomonas. We found a birth process of this gene family in evolution. Tandem and segmental duplication played dominant roles for their expansion. In addition, TLPs were under purifying selection, and most members were responding to some biotic or abiotic stresses. Functional network analysis exhibited some resistance genes working together with TLPs. Our findings shed some light on this family gene evolution in plants, which might provide a base for further functional investigation of this family.